Roberta12
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Posts posted by Roberta12
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1 hour ago, Gonepotty said:
I have no idea…I don’t use terracotta so was going to use a pot from the garden centre
If you choose to use a garden pot from the center, perhaps putting it on a LARGE waster slab or cookie would be in order. You probably don't want a melted mess on your shelf. Like @Kelly in AK pointed out, you only need to get to 1200 degrees for calcine. When I calcine epk, I put it in the bisque load simply for ease and convenience. If I am reading correctly, you could even roast it, which is 1000 degrees F.
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Would your terracotta pot be able to withstand bisque temperatures?
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What about this clear? Credit Naomi Clement
Minspar 200 40.00
Gerstley Borate 35.00
Kentucky OM4 Ball clay 15.00
Silica 10.00
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19 hours ago, Min said:
It's the grinding down of the blank going around the curves that I'm wondering about. I think it would be a lot more accurate if I had a jig I could clamp the blank to before grinding it, would help with angle too. There are also ones on aliexpress but I wonder about the quality of those. Hsin-Chuen Lin sells some also, they are all pretty close or the same shape. Makes me question if they are all getting the blanks then sharpening and finishing them.
I actually thought about that also. And if you buy in bulk, it might not be so much for shipping. Who knows.
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I know there are those who sharpen their own tungsten tools, I have just been concerned about breaking it. I really do love my Bison tool. Not only is it a good trimmer but it fits my hand so nicely. I have a number of woodworkers in my family, I could probably get someone to make a handle for the trimmer part from China. I will let you know if I go this route.
r.
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@Morgan Florian Gadsby had a post on IG about Phil and the Bison tools. Check it out. That is so strange that he did respond but not actually.
Roberta
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telephone 702-388-2085 I will post a pic of the box that my tool came in. As soon as I can get it off my phone.
That's for Bison Tools
So sorry for delayed response. It's December
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I have been using Kentucky Mudworks Kota. They call it a porcelain but it is the easiest throwing porcelain I have ever used. And it is more white than Laguna 16 (which I think is Miller 16 on the east coast) I have not used any of Kentucky Mudworks other clays but I am hearing great things about all of them.
Roberta
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I love my Bison tool. I haven't found another I like as well. Mine is about 10 years old. I sent it to Phil to have it sharpened a few years ago. Which he did and returned it. I do know he is a "one man show" and I am wondering if it is his health. @Morgan Have you tried calling him? I talked to him on the phone when I was trying to choose my "perfect" tool. He likes birds. I found that out!
Roberta
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https://www.amazon.com/gp/product/B077583GZD/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
I use these. I can fill them with whatever underglaze I choose. I do a lot of drawing on both greenware and bisque with them.
Roberta
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I throw sitting but I am going to have to make some adjustments. It's my butt and hips that are complaining. And probably the piriformis that @Min mentioned. I throw a few pieces and then stand to move pots or something so I am not sitting for so long. I have thrown like @Kelly in AK described, at some workshops but when I come home, I am back in a sitting position. I priced the extension legs for a Brent and they are OUTRAGEOUS in $$. I will find some cinderblocks and start there. And then try to find the "perfect" chair or stool.
Roberta
- Rae Reich and Kelly in AK
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And focus!! It improves ones focus. Yes, math, yes, chemistry (practical application) yes physics. For me it requires focus! In these times of recognition of increasing depression among teens, clay, (functional or non functional) can be a valuable tool!
I worked for the school district for 23 years. If staff recognized a need or problem that should be addressed, we did not get very far. (depended on the administrator at the time) but....if PARENTS brought up the topic and went to the administrator and possibly even the school board, often that need was addressed. Do you have some parents/guardians who would be willing to talk to your principal/superintendent/school board??
Roberta
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Mark Cortright's article about tumble stacking a kiln is in Ceramics Monthly on Instagram! Great article. I read it a couple of years ago, but always helpful to have a reread! Thanks for valuable advice @Mark C.
Roberta
- neilestrick, Kelly in AK, Pres and 2 others
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5
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I did test tiles of black underglaze with brighter colors of underglaze over the black. I was pleasantly surprised to see the bright colors stayed bright. I thought the black underglaze would "swallow" the brighter colors. It did not. However, black porcelain is different that painting a test tile with black underglaze. It really will be something you have to test. I was using Amaco Velvets.
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@Min I have heard tales of mixing matte and gloss to achieve the look you want, but I have been reluctant to try that. Thanks for the great link!
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This one is my favorite on buff clay. Or light brown clay. I am still in the semi testing phase.
Off White Semi Matte (you can find it on Glazy.)
FF3134 28.0
Silica 16.0
Talc 15.0
EPK 14.0
Ravenscrag Slip 13.0
Ravenscrag Slip Roasted 13.0
Zircopax 7.0
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skutt and L&L are correct. I ran into a similar situation when I got my kiln. And because the building it was going into was new construction and we had to upgrade our electrical, and the inspector didn't have experience with kilns.....we ended up hardwiring my kiln at the inspector's command. And we went with the 60 amp breaker. I talked to Steven Lewecki at L&L and he was proper upset with our inspector, but....there it was. The upside of hardwiring it was that my insurance company was very happy about the hardwiring. So I guess there is that. Would hardwiring it make a difference to your inspector?
Roberta
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@grackle As I am sure you have heard before, test test test. That is why I have several batches of white sitting on the shelf staring at me. I was trying to find a white that would work well on New Mexico Chocolate clay. I may have one now. It's a shiny white, but I may go with it. My other strategy is to use either white slip or white underglaze and put clear over it for the glaze firing. I have a clear that works really well on the dark brown. But because I like to punish myself, I do work with other clay bodies that run the gamut. I have been looking for a nice satin myself. I have a white semi matte that is pretty good, on everything but the dark brown clay. Let me know if you want the recipe.
Oh and I have dialed back to cone 5 as well, my kiln seemed to be firing a bit hot. I was getting serious bloating with the dark brown clay.
Roberta
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I have tested 4 whites from Glazy. And one from another source. All of the whites were great on porcelain, white stoneware, speckled buff and light brown stoneware. However I have only found one that seems to cooperate on dark brown (high iron) stoneware. As @Min and @Callie Beller Diesel have asked, what do you want in a white and what clay are you using? It has made a lot of difference in my tests. And I try to find a glaze that is in a sweet spot on that UMF chart.
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I have had about 50% success with reglazing and refiring. If the place is on the interior of a bowl or cup, I simply put more glaze on it and fire away. That is very successful. If it is on the exterior, I set the piece in front of a small heater or use a heat gun to warm the piece, then quickly put the glaze on. For me it depends on the glaze and where I am trying to reglaze on the pot. @Callie Beller Diesel had some excellent points about the underglaze. But....as @Bill Kielb said, you don't know until you try!
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10 hours ago, Summerss said:
Great! Thanks for the recommendations!
@Summerss I am curious as to which clay you are using?
holds at end of firing
in Equipment Use and Repair
Posted
@HulkWhat is the advantage of a hold on a bisque firing?